"A lesser quality edition in which all of the marginal notes are omitted .... almost all of the original front matter has been eliminated and various tables substituted that add little to the value of the work..."-​-​Gemology, by J. Sinkankas, entry no. 184A.

"There appears to be very little information supplied by the author himself who thus seems to be a compiler without much personal knowledge of the materials that he includes in his book. The following are treated: topaz, ruby & carbuncle, diamond, sapphire, turquoise, emerald, sardonyx, morion, sard, carnelian, onyx, beryl, chrysolite, amethyst, jasper, nephrite, plasma, and others... Also treated are bezoars, both mineralic...and animal, coconut from the Maldive Islands, cachalong, fish bones, serpentine, fossils of various species, animal teeth, horns, tusks, skin and blood of the rhinoceros, pearls, balsams, and closing the text, two electuary medicines using hyacinth (zircon?), and finally, a note on the hyacinth."-​-​Gemology, by J. Sinkankas, vol. 1, p. 32.